Project Euler #202: Laserbeam

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    It seems to me that there is a wrong example with bounce off 11 surfaces. My answer for the case is 6 ways (not 2 ways). The printed example shows the laser beam entering by angle 13.897886248014 deg relative to the vertical (and by simmetrical angle -13.897886248014 deg). But there will be also bounce off 11 surfaces for laser beams by the angles 22.4109105310251 deg (and -22.4109105310251 deg) and 4.71500395394821 deg (and -4.71500395394821 deg).